Round brilliant cut diamond



FIG. 1 is a front view of a round brilliant cut diamond showing my newdesign.

FIG. 2 is a top view thereof.

FIG. 3 is a left end view thereof.

FIG. 4 is a bottom view thereof.

FIG. 5 is a right end view thereof; and,

FIG. 6 is a rear view thereof.

CLAIM The ornamental design for a round brilliant cut diamond, as shown.